/*
 * JHeuristics - The Java Meta-Heuritics Library
 * Copyright (C) 2004-2005, Universidade Federal de Campina Grande. All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.jheuristics.ga.operators;

import org.jheuristics.ga.GAConfig;
import org.jheuristics.ga.GAStatus;
import org.jheuristics.ga.Operator;
import org.jheuristics.ga.Population;

/**
 * TODO
 *
 * @author Marcell Manfrin, marcell@ourgrid.org, Jan 9, 2006
 */
public class RandomizedIndividualsCreationOperator implements Operator {
    private Rate rate;
    private PopulationChooser chooser;

    /**
     * TODO
     *
     * @param rate
     * @param chooser
     */
    public RandomizedIndividualsCreationOperator(Rate rate, PopulationChooser chooser) {
        setRate(rate);
        setPopulationChooser(chooser);
    }

    /**
     * TODO
     *
     * @param status
     * @param config
     * @see org.jheuristics.ga.Operator#operate(org.jheuristics.ga.GAStatus, org.jheuristics.ga.GAConfig)
     */
    public void operate(GAStatus status, GAConfig config) {
        Population population = chooser.choose(status, config);
        for (int i = 0, numberOfIndividuals = rate.rate(status, config); i < numberOfIndividuals; i++) {
            population.addIndividual(config.getIndividualsFactory().createRandomIndividual(config));
        }
    }

    /**
     * TODO
     *
     * @return
     */
    public PopulationChooser getPopulationChooser() {
        return chooser;
    }

    /**
     * TODO
     *
     * @param chooser
     */
    public void setPopulationChooser(PopulationChooser chooser) {
        if (null == chooser) {
            // TODO: ERROR MSG
            throw new NullPointerException();
        }
        this.chooser = chooser;
    }

    /**
     * TODO
     *
     * @return
     */
    public Rate getRate() {
        return rate;
    }

    /**
     * TODO
     *
     * @param rate
     */
    public void setRate(Rate rate) {
        if (null == rate) {
            // TODO: ERROR MSG
            throw new NullPointerException();
        }
        this.rate = rate;
    }

}
